EP1850436B1 - Endstruktur eines supraleitenden kabels - Google Patents

Endstruktur eines supraleitenden kabels Download PDF

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Publication number
EP1850436B1
EP1850436B1 EP05719104.1A EP05719104A EP1850436B1 EP 1850436 B1 EP1850436 B1 EP 1850436B1 EP 05719104 A EP05719104 A EP 05719104A EP 1850436 B1 EP1850436 B1 EP 1850436B1
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EP
European Patent Office
Prior art keywords
refrigerant
layer
bushing
bath
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP05719104.1A
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English (en)
French (fr)
Other versions
EP1850436A1 (de
EP1850436A4 (de
Inventor
Yuuichi Osaka Works of SUMITOMO ELECTRIC ASHIBE
Takato Osaka Works of SUMITOMO ELECTRIC MASUDA
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Sumitomo Electric Industries Ltd
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Sumitomo Electric Industries Ltd
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Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Publication of EP1850436A1 publication Critical patent/EP1850436A1/de
Publication of EP1850436A4 publication Critical patent/EP1850436A4/de
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Publication of EP1850436B1 publication Critical patent/EP1850436B1/de
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/34—Cable fittings for cryogenic cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B12/00—Superconductive or hyperconductive conductors, cables, or transmission lines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/20—Cable fittings for cables filled with or surrounded by gas or oil
    • H02G15/22—Cable terminations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment

Definitions

  • the present invention relates to a terminal structure of a superconducting cable in which a terminal member of the superconducting cable extends from a cryogenic side to a room-temperature side through a bushing. More particularly, the present invention relates to a terminal structure of a superconducting cable capable of maintaining airtightness of a flange placed between the cryogenic side and the room-temperature side for an extended period of time.
  • a structure shown in Fig. 5 is known as a terminal structure of a superconducting cable (see Patent Document 1).
  • This terminal structure includes a terminal of a superconducting cable 100, a refrigerant bath 101 housing this terminal, a bushing 102 providing electrical conduction from a superconducting conductor 100a of cable 100 to a room-temperature side, a vacuum container 103 covering an outer periphery of refrigerant bath 101, a porcelain tube 104 protruding from a room-temperature side of vacuum container 103.
  • Bushing 102 has in its center a conductor 102a which is electrically connected to superconducting conductor 100a via a joint 105 and which is covered with a solid insulator 102b such as ethylene propylene rubber therearound, and is housed along from vacuum container 103 to porcelain tube 104. It is noted that, in the example shown in Fig. 5 , stress cones 102c are arranged on an outer periphery of solid insulator 102b in the vicinity of both ends of bushing 102, respectively.
  • Porcelain tube 104 is filled with an insulating fluid 104a such as an insulating oil and SF 6 gas.
  • Refrigerant bath 101 includes a liquid refrigerant layer 101b filled with a liquid refrigerant 101 a such as liquid nitrogen supplied from a supply pipe 106 and a gaseous refrigerant layer 101d filled with a refrigerant gas 101c such as helium gas and nitrogen gas in a layer on liquid refrigerant layer 101b in Fig. 5 .
  • Refrigerant gas 101c can be discharged through a discharge pipe 107.
  • Refrigerant gas 101c is also maintained in a state pressurized by a pressurizer (not shown) so that liquid refrigerant 101a may not rise to the room-temperature side.
  • Vacuum container 103 in a cryogenic side and porcelain tube 104 in the room-temperature side are separated by a flange 108.
  • This flange 108 is usually provided with a seal 109 to keep airtightness in order to prevent refrigerant gas 101 c of gaseous refrigerant layer 101d from entering porcelain tube 104 in the room-temperature side.
  • the conventional terminal structure mentioned above has a problem in that a long-term use may cause the seal of the flange to be cooled by a refrigerant to cure, and thereby to deteriorate in its sealing performance to leak the refrigerant gas into the room-temperature side, in other words, it is possible that the airtightness cannot be kept.
  • a main object of the present invention is to provide a terminal structure of a superconducting cable capable of preventing degradation in airtightness of a seal provided on the boundary between a room-temperature side and a cryogenic side for a long-term use.
  • the present invention is a terminal structure of a superconducting cable, a terminal member of the superconducting cable extending from a cryogenic side to a room-temperature side through a bushing, characterized in that the terminal structure includes, in the cryogenic side, a refrigerant bath cooling the bushing, the refrigerant bath includes a gaseous refrigerant layer and a liquid refrigerant layer, and, in the gaseous refrigerant layer, the distance between an inner surface of the refrigerant bath and an outer periphery of the bushing is dimensioned such that a gaseous state is maintained without being pressurized by a pressurizer and respective pressures of a gaseous refrigerant and a liquid refrigerant counterbalance each other.
  • the inner surface of the refrigerant bath and the outer periphery of the bushing are spaced widely apart as shown in Fig. 5 so as to ensure a sufficient insulation distance, and also spaced widely apart in the vicinity of the flange provided on the boundary between the room-temperature side and the cryogenic side.
  • the bushing diameter is approximately 150 mm ⁇
  • the width of the refrigerant bath in the vicinity of the flange is approximately 400 mm, that is, the distance between the inner surface of the refrigerant bath and the outer periphery of the bushing is approximately 125 mm.
  • the width of the refrigerant bath in the vicinity of the flange (the distance between the inner surface of the refrigerant bath and the outer periphery of the bushing) is so broad that a gentle temperature gradient from the cryogenic side to the room-temperature side cannot be established and the seal provided in the flange is cooled by the gaseous refrigerant and the liquid refrigerant coming up and is accordingly cured to deteriorate airtightness.
  • the length in the direction from the cryogenic side toward the room-temperature side of the gaseous refrigerant layer may be extended in order to establish the gentle temperature gradient.
  • the present invention implements a more compact configuration not by extending the length in the direction from the cryogenic side toward the room-temperature side of the gaseous refrigerant layer, but by decreasing the distance between the inner surface of the refrigerant bath and the outer periphery of the bushing specifically in the vicinity of the flange.
  • the decreased distance between the inner surface of the refrigerant bath and the outer periphery of the bushing helps increase the pressure of the gaseous refrigerant. Therefore, by adjusting the dimensions of the gaseous refrigerant layer as appropriate, the gaseous refrigerant can be kept in a gaseous state without pressurization by a pressurizer as in the conventional cases. Thus, the terminal structure can be made more compact without the need to provide a pressurizer additionally.
  • the bushing includes a conductor capable of providing electrical conduction with a superconducting conductor of the superconducting cable and a solid insulator covering an outer periphery of the conductor.
  • the solid insulator may be an insulating resin, for example, an insulating rubber material such as ethylene propylene rubber and preferably be fiber reinforced plastics (FRP) because its insulation performance is so high that the width of the gaseous refrigerant layer (the distance between the inner surface of the refrigerant bath and the outer periphery of the bushing) can be narrowed.
  • FRP fiber reinforced plastics
  • the refrigerant bath is made of such metal as stainless steel and that a solid insulator is used that is structured to include a member of FRP having its outermost layer covered with such metal as stainless steel to thereby allow the opposite surfaces respectively of the refrigerant bath and the bushing to be metal. Therefore, a so-called bayonet structure is implemented and thus the width of the gaseous refrigerant layer can be narrowed.
  • the refrigerant bath is provided within a vacuum container having a vacuum thermal insulating layer, and also preferable that the refrigerant bath is made of metal such as stainless steel with excellent strength. This configuration may be similar to that of the conventional vacuum container and refrigerant bath.
  • the distance between the inner surface of the refrigerant bath and the outer periphery of the bushing is dimensioned such that the gaseous state is maintained without being pressurized by a pressurizer and respective pressures of the gaseous refrigerant and the liquid refrigerant counterbalance each other. Therefore, adjustments may be made depending on the pressure of the liquid refrigerant and an amount of incoming heat and the like.
  • Liquid nitrogen is used as the liquid refrigerant and the pressure is about 0.3 to 0.5 MPa
  • the distance between the inner surface of the refrigerant bath and the outer periphery of the bushing may be about 0.1 to 2.5 mm and the length of the gaseous refrigerant layer (the distance in the direction from the cryogenic side toward the room-temperature side) may be about 300 to 500 mm.
  • a decreased length of the gaseous refrigerant layer increases the distance between the inner surface of the refrigerant bath and the outer periphery of the bushing. The length and distance are selected so as to provide the terminal structure of the desired dimensions.
  • the gaseous refrigerant is first supplied into the refrigerant bath and thereafter the liquid refrigerant is supplied thereinto so as to counterbalance respective pressures of the gaseous refrigerant and the liquid refrigerant.
  • the refrigerant bath is hermetically sealed to keep the pressures in equilibrium and thereby to keep the gaseous refrigerant in a pressurized state without being pressurized by a pressurizer.
  • the liquid refrigerant is cooled by a refrigerator so that it can be maintained at an appropriate temperature.
  • the liquid refrigerant may also be circulated for cooling. Although movement of the liquid refrigerant may more or less cause a change in level of the liquid surface, the pressure of the liquid refrigerant can be adjusted to counterbalance respective pressures of the gaseous refrigerant and the liquid refrigerant to thereby keep its counterbalanced state.
  • Refrigerants used for the gaseous refrigerant layer and the liquid refrigerant layer may be either same or different type.
  • the gaseous refrigerant of the gaseous refrigerant layer is in a pressurized state. Therefore, the liquid refrigerant is pressed against the cryogenic side to prevent the liquid refrigerant from leaking into the room-temperature side. It is preferable that a leakage prevention member is additionally provided so that leakage of the liquid refrigerant can be prevented more effectively.
  • the shape of the leakage prevention member may be any shape which can restrain the liquid refrigerant from leaking into the room-temperature side.
  • the leakage prevention member may have the shape of a ring which can be fit on the outer periphery of the bushing to allow the bushing to pass therethrough.
  • the leakage prevention member may have the shape which can be fit in the refrigerant bath at and around the boundary between the gaseous refrigerant layer and the liquid refrigerant layer.
  • the material of the leakage prevention member may be a rubber base resin material such as ethylene propylene rubber, and preferably be a silicon base resin material because of its excellent resistance to a refrigerant such as liquid nitrogen.
  • the specific size of the gaseous refrigerant layer as mentioned above can provide a gentle temperature gradient from the cryogenic side to the room-temperature side without excessively increasing the length of the gaseous refrigerant layer.
  • the terminal structure of the present invention can restrain the degradation of airtightness of the seal of the flange for a long-term use to achieve the prevention of leakage of the gaseous refrigerant into the room-temperature side.
  • the liquid refrigerant can be pressed against the cryogenic side to prevent it from rising into the room-temperature side because the gaseous refrigerant in the gaseous refrigerant layer is in a pressurized state by itself without using a pressurizer. Therefore, the temperature gradient of the gaseous refrigerant layer is maintained, so that the degradation in the sealing performance of the seal of the flange can be prevented.
  • the gaseous refrigerant is in a pressurized state without using a pressurizer. Therefore, a pressurizer for the gaseous refrigerant layer can be eliminated and the number of components can be reduced.
  • a terminal structure of a superconducting cable of the present invention is described. It is noted that the same reference characters in the drawings indicate the same components. This terminal structure is similar in its basic structure to that of the conventional superconducting cable shown in Fig. 5 .
  • this terminal structure includes a terminal of a superconducting cable 100, a bushing 10 connected to a superconducting conductor 100a of cable 100 to provide electrical conduction from a cryogenic side to a room-temperature side, a refrigerant bath 11 housing the terminal of cable 100 and bushing 10, a vacuum container 12 covering an outer periphery of refrigerant bath 11, and a porcelain tube 104 protruding from a room-temperature side of vacuum container 12.
  • Refrigerant bath 11 includes a liquid nitrogen layer (a liquid refrigerant layer) 13 in its cryogenic side and a nitrogen gas layer (a gaseous refrigerant layer) 14 in its room-temperature side that are adjacent to each other.
  • a flange 108 is placed between the cryogenic side and the room-temperature side and, in flange 108, a seal 109 is provided on the boundary with an outer periphery of bushing 10 to provide airtightness.
  • the present invention is characterized by the dimensions of nitrogen gas layer 14, and specifically in that distance t between an inner surface 11 a of refrigerant bath 11 and the outer periphery of busing 10 is dimensioned such that nitrogen gas is kept in a gaseous state without being pressurized by a pressurizer and the pressure of nitrogen gas and the pressure of liquid nitrogen counterbalance each other.
  • distance t between an inner surface 11 a of refrigerant bath 11 and the outer periphery of busing 10 is dimensioned such that nitrogen gas is kept in a gaseous state without being pressurized by a pressurizer and the pressure of nitrogen gas and the pressure of liquid nitrogen counterbalance each other.
  • Bushing 10 (140 mm in diameter) used in the present example includes a conductor 10a (40 mm ⁇ in diameter) capable of providing electrical conduction with superconducting conductor 100a of superconducting cable 100 and a solid insulator 10b (50 mm in thickness) covering an outer periphery of conductor 10a.
  • Superconducting conductor 100a and conductor 10a of busing 10 are connected via a joint 100b.
  • Conductor 10a used in the present example is made of copper with low electrical resistance at a temperature near the temperature of liquid nitrogen.
  • Solid insulator 10b is formed by FRP having excellent insulation.
  • an upper shield 10c made of copper is provided on the upper end of bushing 10 (an end provided in the room-temperature side) in Fig. 1 .
  • refrigerant bath 11 is formed of stainless steel and housed within vacuum container 12 which is also formed of stainless steel. Vacuum container 12 and refrigerant bath 11 are configured to have a vacuum insulating layer 11b therebetween.
  • This refrigerant bath 11 includes liquid nitrogen layer 13 and nitrogen gas layer 14. Liquid nitrogen layer 13 is connected to a refrigerator 15 for cooling a liquid nitrogen 13a.
  • refrigerant bath 11 is filled with nitrogen gas in order to remove moisture and the like within refrigerant bath 11 before liquid nitrogen 13a is supplied into refrigerant bath 11.
  • Liquid nitrogen 13a is then supplied to liquid nitrogen layer 13 and nitrogen gas is allowed to remain in a portion of refrigerant bath 11, specifically in the vicinity of flange 108 provided on the boundary between the cryogenic side and the room-temperature side. This portion where the nitrogen gas remains is nitrogen gas layer 14.
  • nitrogen gas layer 14 has distance t of 2.5 mm between an inner surface 11 a of refrigerant bath 11 and the outer periphery of bushing 10 as well as length L of 400 mm.
  • liquid nitrogen is supplied into refrigerant bath 11 to hermetically seal refrigerant bath 11 so that the pressure of liquid nitrogen within refrigerant bath 11 is about 0.5 MPa.
  • This configuration allows the gaseous state to be maintained by the pressure of nitrogen gas itself and respective pressures of nitrogen gas 14a and liquid nitrogen 13a to almost counterbalance each other.
  • the terminal structure of the superconducting cable of the present invention having the above-mentioned configuration can provide a gentle temperature gradient from the cryogenic side toward the room-temperature side without excessively increasing the length of the gaseous refrigerant layer. This can effectively prevent the degradation of the sealing property resulting from the curing of the seal provided in the flange by excessive cooling. Therefore, the superconducting cable of the present invention can maintain airtightness between the room-temperature side and the cryogenic side for long-term use.
  • the terminal structure of the superconducting cable of the present invention does not need a pressurizer for keeping the gaseous refrigerant within the gaseous refrigerant layer in a gaseous state, pressurizing equipment can be eliminated and the terminal structure can further be downsized.
  • the bushing of the above-mentioned Embodiment 1 was used to change dimensions (thickness t and length L) of the nitrogen gas layer for checking the condition of deterioration of the seal provided in the flange.
  • the pressure of liquid nitrogen was changed in the range of 0.3 to 0.5 MPa depending on thickness t and length L.
  • the seal was checked after keeping it under the above-mentioned condition for sixty hours. It was shown that the seal having thickness t of 0.1 to 2.5 mm and length L of 300 to 500 mm had sufficient sealing performance with almost no curing. It was also shown that a smaller thickness t and a larger length L facilitate establishing the temperature gradient.
  • Embodiment 1 shows the configuration which does not circulate the refrigerant, it may be circulated.
  • the pressure of liquid nitrogen is adjusted in the range of 0.3 to 0.5 MPa depending on thickness t and length L so that it is counterbalanced with the pressure of nitrogen gas.
  • a leakage prevention member may be provided for preventing the liquid refrigerant from leaking into the room-temperature side. Referring to Figs. 3 and 4 , examples of the terminal structure having the leakage prevention member will be described hereinafter.
  • a ring-shaped member 20 that can be fit on a portion around the boundary between nitrogen gas layer 14 and liquid nitrogen layer 13 is provided around the above-mentioned boundary.
  • Ring-shaped member 20 used in the present example is formed of silicon resin with excellent resistance to liquid nitrogen.
  • Block-shaped member 21 that is shaped to fit the shape around the boundary between nitrogen gas layer 14 and liquid nitrogen layer 13 is provided around the above-mentioned boundary.
  • Block-shaped member 21 used in the present example is formed of silicon resin with excellent resistance to liquid nitrogen.
  • the liquid refrigerant can be restrained from leaking into the room-temperature side and the seal of the flange can be prevented from being cooled due to contact with the liquid refrigerant.
  • the above-mentioned leakage prevention member does not completely seal a space between liquid nitrogen layer 13 and nitrogen gas layer 14, but is dimensioned such that the pressure of liquid nitrogen 13a can be applied to nitrogen gas 14a.
  • the terminal structure of the present invention is preferably applied to an end portion of the superconducting cable.

Landscapes

  • Gas Or Oil Filled Cable Accessories (AREA)
  • Containers, Films, And Cooling For Superconductive Devices (AREA)
  • Cable Accessories (AREA)

Claims (2)

  1. Anschlußstruktur eines supraleitenden Kabels (100), wobei sich ein Anschlußelement des supraleitenden Kabels durch eine Durchführung (10) von einer Tieftemperaturseite zu einer Raumtemperaturseite erstreckt, wobei
    - die Anschlußstruktur auf der Tieftemperaturseite ein Kühlbad umfaßt, das die Durchführung (10) kühlt,
    - das Kühlbad (11) eine flüssige Kühlschicht (13), welche aus flüssigem Nitrogen besteht, und eine gasförmigen Kühlschicht (14) in einem Raum zwischen einer inneren Oberfläche (11a) des Kühlbades (11) und einem äußeren Umfangsbereich der Durchführung (10) umfaßt, wobei
    - die gasförmige Kühlschicht aus einem gasförmigen Kühlmittel (14a) besteht, das sich von der flüssigen Kühlschicht bis zu einem Flansch (108) erstreckt und eine Länge L aufweist, die eine Entfernung zwischen der flüssigen Kühlschicht und dem Flansch (108) darstellt,
    - der Flansch (108) zwischen der Tieftemperaturseite und der Raumtemperaturseite plaziert ist und in dem Flansch (108) ein Dichtungsring (109) vorgesehen ist, der an den äußeren Umfang der Durchführung (10) angrenzt,
    dadurch gekennzeichnet, daß das flüssige Nitrogen einen Druck von 0,3 bis 0,5 MPa aufweist und daß in der gasförmigen Kühlschicht (14) die Entfernung zwischen einer inneren Oberfläche (11a) des Kühlbades (11) und einem äußeren Umfang der Durchführung (10) von 0,1 bis 2,5 mm und die Länge L von 300 bis 500 mm beträgt, so daß ohne Druckbeaufschlagung durch einen Druckhalter ein gasförmiger Zustand aufrechterhalten wird, und daß die verschiedenen Drücke des gasförmigen Kühlmittels und des flüssigen Kühlmittels sich gegenseitig kompensieren.
  2. Anschlußstruktur des supraleitenden Kabels nach Anspruch 1, ferner umfassend ein Leckvermeidungsteil (20, 21), um ein Auslaufen des flüssigen Kühlmittels (13a) in die Raumtemperaturseite zu verhindern.
EP05719104.1A 2005-02-15 2005-02-15 Endstruktur eines supraleitenden kabels Expired - Fee Related EP1850436B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2005/002202 WO2006087761A1 (ja) 2005-02-15 2005-02-15 超電導ケーブルの端末構造

Publications (3)

Publication Number Publication Date
EP1850436A1 EP1850436A1 (de) 2007-10-31
EP1850436A4 EP1850436A4 (de) 2011-04-13
EP1850436B1 true EP1850436B1 (de) 2013-10-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP05719104.1A Expired - Fee Related EP1850436B1 (de) 2005-02-15 2005-02-15 Endstruktur eines supraleitenden kabels

Country Status (8)

Country Link
US (1) US7729731B2 (de)
EP (1) EP1850436B1 (de)
KR (1) KR101058331B1 (de)
CN (1) CN1954468B (de)
CA (1) CA2564235C (de)
HK (1) HK1101650A1 (de)
NO (1) NO20074689L (de)
WO (1) WO2006087761A1 (de)

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CN101689758B (zh) 2007-03-21 2013-09-04 Nkt电缆乌尔特拉有限公司 低温电缆终端单元
FR2929052A1 (fr) * 2008-03-20 2009-09-25 Nexans Sa Structure de connexion electrique pour element supraconducteur
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JP5566714B2 (ja) * 2010-02-04 2014-08-06 古河電気工業株式会社 極低温ケーブルの終端接続部
KR101798659B1 (ko) * 2011-04-27 2017-11-16 엘에스전선 주식회사 초전도 케이블 장치
US9000295B1 (en) * 2012-05-10 2015-04-07 The Florida State University Research Foundation, Inc. Termination for gas cooled cryogenic power cables
KR102005583B1 (ko) * 2013-01-23 2019-10-08 엘에스전선 주식회사 초전도 기기용 종단 구조체
KR102005582B1 (ko) * 2013-01-23 2019-07-30 엘에스전선 주식회사 초전도 기기용 종단 구조체
US9450164B2 (en) * 2013-03-13 2016-09-20 Varian Semiconductor Equipment Associates, Inc. High voltage busing for cryogenics applications
JP2015029372A (ja) * 2013-07-30 2015-02-12 昭和電線ケーブルシステム株式会社 極低温機器の端末装置
WO2015068390A1 (ja) * 2013-11-05 2015-05-14 昭和電線ケーブルシステム株式会社 極低温ケーブルの終端接続部
CN104485631A (zh) * 2014-12-12 2015-04-01 王凡业 一种冷绝缘超导电缆端头
US10892136B2 (en) 2018-08-13 2021-01-12 Varian Semiconductor Equipment Associates, Inc. Ion source thermal gas bushing
CN110044500B (zh) * 2019-04-15 2020-04-07 西南交通大学 一种电缆接头温度检测及故障预警因子测评方法
CN110518376B (zh) * 2019-08-30 2021-05-28 天津大学 一种高温超导电力电缆多通接头
CN114284764B (zh) * 2020-07-31 2023-07-07 深圳供电局有限公司 三相同轴超导电缆终端系统及其组装方法
CN114336102B (zh) * 2021-11-18 2023-07-25 深圳供电局有限公司 超导电缆接头及装置
CN114284761B (zh) * 2021-12-21 2023-09-12 深圳供电局有限公司 一种超导电缆转接头

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Also Published As

Publication number Publication date
US7729731B2 (en) 2010-06-01
KR20070102651A (ko) 2007-10-19
US20070191231A1 (en) 2007-08-16
CA2564235A1 (en) 2006-08-24
CA2564235C (en) 2012-08-14
KR101058331B1 (ko) 2011-08-22
EP1850436A1 (de) 2007-10-31
EP1850436A4 (de) 2011-04-13
NO20074689L (no) 2007-09-14
CN1954468B (zh) 2010-05-05
CN1954468A (zh) 2007-04-25
WO2006087761A1 (ja) 2006-08-24
HK1101650A1 (en) 2007-10-18

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